emily53 emily53

14-09-2015
Mathematics

Answered

the sum of three times a number and 12 is twenty

Verified Answer :

SchwarzschildRadius SchwarzschildRadius

14-09-2015

So,

"The sum of three times a number"
3n +

"and 12"
3n + 12

"is 20"
3n + 12 = 20

Subtract 12 from both sides.
3n = 8

Divide both sides by 3.
\(n = \frac{8}{3} \ or\ 2 \frac{2}{3}\)

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